{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["cell line", "protein", "cell type", "RNA", "DNA"], "input": "These changes in the enhancer element were identified in the original AL1 virus stock ."}
{"cell line": [], "protein": [], "cell type": [], "RNA": [], "DNA": ["enhancer element"]}